src/Decoder_Opus.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2013 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version, but always including the *additional*
   9 // restrictions defined in the "License.txt" file.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this program; if not, write to the Free Software Foundation, Inc.,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 // http://www.gnu.org/licenses/gpl-2.0.txt
  21 ///////////////////////////////////////////////////////////////////////////////
  22
  23 #include "Decoder_Opus.h"
  24
  25 #include "Global.h"
  26
  27 #include <QDir>
  28 #include <QProcess>
  29 #include <QRegExp>
  30 #include <QUuid>
  31
  32 bool OpusDecoder::m_disableResampling = false;
  33
  34 OpusDecoder::OpusDecoder(void)
  35 :
  36         m_binary(lamexp_lookup_tool("opusdec.exe"))
  37 {
  38         if(m_binary.isEmpty())
  39         {
  40                 THROW("Error initializing Opus decoder. Tool 'opusdec.exe' is not registred!");
  41         }
  42 }
  43
  44 OpusDecoder::~OpusDecoder(void)
  45 {
  46 }
  47
  48 bool OpusDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  49 {
  50         QProcess process;
  51         QStringList args;
  52
  53         if(m_disableResampling)
  54         {
  55                 args << "--no-resample";
  56         }
  57
  58         args << QDir::toNativeSeparators(sourceFile);
  59         args << QDir::toNativeSeparators(outputFile);
  60
  61         if(!startProcess(process, m_binary, args))
  62         {
  63                 return false;
  64         }
  65
  66         bool bTimeout = false;
  67         bool bAborted = false;
  68         int prevProgress = -1;
  69
  70         QRegExp regExp("\\((\\d+)%\\)");
  71
  72         while(process.state() != QProcess::NotRunning)
  73         {
  74                 if(*abortFlag)
  75                 {
  76                         process.kill();
  77                         bAborted = true;
  78                         emit messageLogged("\nABORTED BY USER !!!");
  79                         break;
  80                 }
  81                 process.waitForReadyRead(m_processTimeoutInterval);
  82                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  83                 {
  84                         process.kill();
  85                         qWarning("opusdec process timed out <-- killing!");
  86                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  87                         bTimeout = true;
  88                         break;
  89                 }
  90                 while(process.bytesAvailable() > 0)
  91                 {
  92                         QByteArray line = process.readLine();
  93                         QString text = QString::fromUtf8(line.constData()).simplified();
  94                         if(regExp.lastIndexIn(text) >= 0)
  95                         {
  96                                 bool ok = false;
  97                                 int progress = regExp.cap(1).toInt(&ok);
  98                                 if(ok && (progress > prevProgress))
  99                                 {
 100                                         emit statusUpdated(progress);
 101                                         prevProgress = qMin(progress + 2, 99);
 102                                 }
 103                         }
 104                         else if(!text.isEmpty())
 105                         {
 106                                 emit messageLogged(text);
 107                         }
 108                 }
 109         }
 110
 111         process.waitForFinished();
 112         if(process.state() != QProcess::NotRunning)
 113         {
 114                 process.kill();
 115                 process.waitForFinished(-1);
 116         }
 117
 118         emit statusUpdated(100);
 119         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 120
 121         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
 122         {
 123                 return false;
 124         }
 125
 126         return true;
 127 }
 128
 129 bool OpusDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 130 {
 131         if(containerType.compare("OGG", Qt::CaseInsensitive) == 0)
 132         {
 133                 if(formatType.compare("Opus", Qt::CaseInsensitive) == 0)
 134                 {
 135                         {
 136                                 return true;
 137                         }
 138                 }
 139         }
 140
 141         return false;
 142 }
 143
 144 QStringList OpusDecoder::supportedTypes(void)
 145 {
 146         return QStringList() << "Opus Audio Codec (*.opus *.ogg)";
 147 }
 148